When the check button is clicked WhoisMark will gather data from several different on-line resources. This process can take up to 30 seconds, so please be patient.

Whois Lookup and Domain Name Search
lookup for domain registrant information for all top-level domains [both generic and country-code types are supported, 700 TLDs in total].
Whois is information about domain , date the domain was created and currently set to expire, their domain name servers.